Is Thai hard to learn?

The short answer

Thai is harder than Spanish or French and easier than Japanese, Korean or Mandarin. The US Foreign Service Institute (FSI), which trains American diplomats, puts it in Category III, its "hard languages", with about 44 weeks of full-time study (1,012 class hours) to reach a solid professional level.

Most of what makes Thai hard comes at the start: hearing and saying the tones, and learning a new alphabet. What makes it easier than its reputation is the grammar. Once the sounds and the script are under way, simple grammar and short words let you build sentences fast, among people who are thrilled that you're trying.

What makes Thai hard

1. Five tones. Every syllable has one of five tones (mid, low, falling, high or rising), and a different tone makes a different word. ใกล้glâi (near) and ไกลglai (far) differ only in tone, and so do ข้าวkâao (rice) and ขาวkǎao (white). English uses pitch for emotion and questions, so your ear has never had to treat it as part of a word. This is the biggest hurdle, and the one to tackle first.

2. Vowel length. Most Thai vowels come in a short and a long version, and the length changes the word: ขาวkǎao (white) and เขาkǎo (he, she) have the same tone and differ only in how long you hold the "a".

3. Sounds English doesn't use. Thai has a p and a t without the puff of air (like the p in "spin", but at the start of a word), written bp and dt in our romanization, as in ไปbpai (to go) and ตาdtaa (eye). Words can start with ng, as in งานngaan (work), and there are vowels like the ue in มือmuue (hand). Final k, t and p are cut off, never released.

4. A new script. Thai has 44 consonants (two no longer used), vowel signs that go before, after, above, below or around the consonant, four tone marks, and no spaces between words. A written syllable's tone follows from the consonant's class, the vowel length, the final sound and any tone mark. It's a regular system you learn once, but it takes a few weeks to learn the letters and a few months to read comfortably.

5. Real-life Thai. Everyday speech is fast and drops sounds. Politeness is built in: the particle at the end of a sentence depends on your gender, and the word for "I" on who you're talking to. There are registers, too: กินgin, ทานtaan and รับประทานráp-bprà-taan all mean "eat", from market stall to formal sign. And many Thais speak Isan, Northern or Southern Thai at home.

What makes Thai easier than you think

• Verbs never change. กินgin is eat, eats, ate, eaten and eating. No conjugation tables and no irregular verbs.
• No tenses. Time comes from words like เมื่อวานmûea-waan (yesterday), แล้วláew (already) and จะjà (will), or from context.
• No plurals, no articles, no grammatical gender. หมาmǎa is a dog, the dog or dogs.
• Familiar word order. Subject, verb, object, as in English: ผมชอบกาแฟpǒm châwp gaa-fae is "I like coffee".
• Short words. Most everyday words have one or two syllables.
• English loanwords, said the Thai way: แท็กซี่táek-sîi, คอมพิวเตอร์kawm-piu-dtôe, ฟรีfrii.
• Spelling you can trust. Unlike English spelling, Thai spelling almost always tells you how to say a word, tone included, once you know the rules.
• Encouragement. Say three words and you'll hear เก่งจังgèng jang, "you're so good!"

How hard is Thai compared with other languages?

FSI groups languages by how long its English-speaking students take to reach professional working proficiency, a level 3 in speaking and listening on the US government's ILR scale. Its students study full time, about 23 hours of class and 17 hours of self-study a week. Its current figures:

• Category I (Spanish, French, Italian, Dutch and others): 24 to 30 weeks, 552 to 690 class hours
• Category II (German, Indonesian, Malay, Swahili, Haitian Creole): about 36 weeks, 828 class hours
• Category III, "hard languages" (Thai, Lao, Khmer, Vietnamese, Burmese, Russian, Hindi, Polish and many more): about 44 weeks, 1,012 class hours
• Category IV, "super-hard languages" (Arabic, Mandarin, Cantonese, Japanese, Korean): 88 weeks, 2,200 class hours

So Thai sits with Vietnamese and Russian: roughly one and a half times Spanish and half of Japanese. Two caveats. The figures describe adults in full-time, intensive classes, aiming high; most learners study part-time and want conversation, not diplomacy. And your background matters: Lao speakers pick up Thai fast, and speakers of a tonal language such as Mandarin or Vietnamese find the tones less strange.

How long does it take to learn Thai?

It depends on what "learn" means. FSI's 44 weeks add up to about 1,760 hours of class and self-study. At an hour a day, that's nearly five years; at 30 minutes a day, closer to ten. But that level means negotiating, giving presentations and reading the news. Everyday Thai comes much sooner, and you can measure it in lessons:

• Sounds and tones: our Sounds and tones course has 11 short lessons, a good first fortnight.
• Reading: our Read Thai course has 20 lessons, from your first letters to real signs and menus. At a lesson every day or two, that's one to two months. Reading at speed comes with practice after that.
• First conversations: stage 1 of our course (units 1 to 10, level A1) is 60 short lessons: greetings, food, prices, transport, directions and plans. At a lesson a day, that's about two months.
• Real conversations: stages 2 and 3 take you on to B1 (the whole course is 24 units and 144 lessons), alongside the listening and talking you do outside the course.

For our rough estimates by level, and plans for travellers, new expats and partners of Thai speakers, see our guide on how to learn Thai.

What speeds you up, and what slows you down

Faster: a little every day, even 15 minutes; tones and vowel length from day one, with feedback; the script early, because it shows you the tones; speaking out loud every day; and using Thai where you live, or with a Thai partner and friends who speak it with you.

Slower: learning only through romanization (most systems drop the tones and vowel length, and none of them gets you reading signs or menus); reading and listening without ever speaking; long breaks; and letting every conversation switch to English.

A free plan for your first three months

1. Week 1: sounds. Work through the first Sounds and tones lessons, starting with the five tones, and test your ear on our Thai tones page.
2. Weeks 1 to 8: phrases. One lesson a day of the free course, from Unit 1 (greetings, and ครับkráp and ค่ะkâ) to Unit 10. Review is built in.
3. From week 2: the script. One Read Thai lesson every day or two.
4. Every day: speak. Say each phrase out loud, let the AI speech trainer check your tones, and try a role-play with the AI conversation partner.
5. Every day: listen. A song, a YouTube video or a scene from a Thai series you enjoy.
6. Month 3: stage 2, and real people: vendors, drivers, a language exchange.

It's all free, and you can start without an account.